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ANNA E.VB ALDW'IN, or NEWARK, NEW JERSEY.

Letters Patent No. 78,649, dated June 9, 1868.

IMPROVED PROGESS 0P TREATING MILK TO OBTAIN USEFUL PRODUQTS.

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TO ALL WHOM IT MAY CONCERN:

Beit known that I, ANNA E. BALDWIN, wife of GEORGE T. BALDWIN, ofNewark, in'the county of Essex, and State of New Jersey, have made a newand useful Improvement in Obtaining'Usei'ul Pr'oducts from Milk; and Ihereby declare the following to be a full and correct description of thesame.

' The object of my invention is to produce marrow from milk, and toutilize the waste in making butter, such as whey,'cu'rd, 66m, inproducing useful substances, viz, vinegar, cordial, soap, &c.- i l Iplace milk in pans, as is usually done, to raise cream. This cream ischurned 'untiL a substance is produced, which, when-properly washed. andsalted, becomes butter. Instead of churningthe cream, Ican extract thesubstance from the same by a process not necessary to describe in thisSpecification, but for which I am about to apply for Letters-Patent. Ihave discovered that this substance consists, in the greater part,of'marro-w, such as is found in the bones of animals,-and whichbone-marrow is used for making pomatum, ointmentsfarid in a great manydifferent ways, but which is comparatively very costly, but a smallquantity being obtained from any animal.

I take this substance, and, instead of washing and salting it, place itin a vessel, with a suiiicient quantity of water, heatithe same to sucha degree that the water shall thoroughly permeate all the fattysubstance,

and extract from the same all milky and other impure articles whichremain in the same after churning. I then allow themass to cool,.whenthe pure marrow will be found on top, while the water and all impureparticles remain at the bottom. This process of'purification ought to begone through with at least twice. The marrow is then againsubjected toheat without adding any water, so that any water still remaining intbelnarrow will be evaporated. After cooling the marrow, it is welltobeat or work it for a short time, as'it' thereby becomes ,finer ingrain.

In taking the puremarrow from the vessel, it is unavoidable to leavesome on the surface of the water, which is skimmed of the same, but, notbeing pure enough to be used for ointment, 350., makes an excellentgrease for soap; and this is a very important part of my invention. Thesoap may be made by any of the wellknown methods. v v

I will now describe another part of. my invention.

I allow the milk, from which-the cream is taken for. thc above process,to sour. The curd is then separated from the whey. The curd may be usedfor making cheese, for feeding, or any other purposes to'which it can beapplied. p

Bymixing the whey with a proper amount of brown sugar, and allowing itto ferment, an excellent cordial, or, at the pleasure of the operator,at good strong vinegar, is produced. To make the cordial, a greaterquantity of sugar is required than for making vinegar. In the firstcase, I usually-take onepound of sugar to six quarts of the whey, andfor the vinegar, one pound of sugar to sixteen quarts of whey; .but Idesire it to be understood distinctly that I do not confine myself toany given quantities, as climate, temperature, 8:01, may necessitatedifferent proportions. l i i The whey obtained in cheese-factories fromthe sweet milk, and which now is thrown away, can be made use of, in theabove-describedmanner, to make vinegar, cordial, &c., thus changing-thewaste into a source of great profit. I

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is'- The improved methods ofobtainingproducts from milk, substantially as and for the purposesherein described.

' ANNA E. BALDWIN. Witnesses:

Gno. T. BALDWIN, Ansxa A. G. KLAUGKE.

